Are we ready for a new design fair in Manhattan? NYC20 -- otherwise known as the New York 20th Century Art and Design Fair, April 12-25, 2012 -- is pitching its tent in Damrosch Park at Lincoln Center, home to the Big Apple Circus. There, fair organizer Dolphin Promotions is partnering with online venture 1st Dibs. A total of 40 dealers are participating, with the preview party benefiting the Bard Graduate Center.